Map of Species Occurrences for Vitis aestivalis

The map below summarizes all occurrence data at the country level. This includes - Observational data : Validated records from INaturalist - Herbarium data : Occurrence data with associated herbariumspecimens - Germplasm data : Occurrence data with living specimens stored in genebanks or botanical gardens - USDA Plants : County level reference of species presence - BONAP : County level reference of species presence - Nature Serve : county level reference of species presence

Spatial Reference

When Latitude and longitude data is present for herbarium and germplasm data, this information is used to spatial derive the county location. When not spatial reference is provide and attempt was made to pull a county reference from attribute data associated with the record. If no certifiable county information was included, the occurrence was drop from the analysis.

Flora of North America Mask

If state level distribution information was provided for a given specific species, that information was used to filter the states in which counties are evalutated.
This species is included in FNA : TRUE

Determining Occupency

Two maps have been generate to estimate the likelihood of species occurrence within a give county.

Un weighted map

The goal of this map is to make as little assumptions about the value or impact of a specific record.

  • Observational data : 1 per observation
  • Herbarium data : 1 per observation
  • Germplasm data : 1 per observation
  • USDA Plants : 1 per reference
  • BONAP : 1 per reference
  • Nature Serve : 1 per reference

For example a county with 3 observational records, 1 germplasm record, and referenced by Nature Serve would have a score of 5.

Weighted Map

The map was generated using the same input data as the unweighted map, but more consideration was given to the expected significance of a record for a specific data source. In this example any records that were collected prior to 1970 do not contribute to the score.

  • Observational data : 0.25 per observation
  • Herbarium data : 0.5 per observation
  • Germplasm data : 1 per observation
  • USDA Plants and Bonap combined : 0.5 per reference
  • Nature Serve : 1 per reference

The USDA Plants and Bonap measures were combine to a single feature due to the similarity in methods for creating these datasets. If a county was referenced by USDA Plants, Bonap, or both USDA Plants and Bonap it receives a score of 0.5

For example a county with 3 observational records, 1 germplasm record, and referenced by Nature Serve would have a score of 3.

Summary of Occurrance Data

This table includes all records not just those with valid latitude and longitude information.

Summary Table of County Data

The table below display additional attribute data for all the counties with know observation on the the selected taxon. All columns can be filtered and sorted.

Data exluded by FNA state filter

If the species state level range has been defined by the Flora of North America, then all spatial data has been clip to the that extent. The table below shows the occurrence data that has been removed by the FNA filter. note: if no FNA data was available for the species no table will be shown as all the data is already on the map